Ok, here's the plan:
I'm currently building a good sound system for my room, so I figured I might as well get a good light show going on in there! I want to create a gadget to basically project a multi-channel sound level meter (I'm thinking maybe 4-6 channels). I've got an idea on how I'm going to actually make the bit that splits up the music and gives signals to power LEDs to show these levels, but what can I use (presumable powered through a relay) to project a block of light onto a flat surface (each 'block' will be about approx 15cm x 30cm and each channel will be a line of these blocks stacked with the longer sides touching almost).
Ideally the projecting device will be as small as possible, I'm hoping to house them in a long narrow box somewhere on the wall. The lights don't need to be particularly bright, they'll be used predominately when the room is dark. Mounting the lights on the ceiling isn't really an option for me.
Thanks for any advice!
I'm currently building a good sound system for my room, so I figured I might as well get a good light show going on in there! I want to create a gadget to basically project a multi-channel sound level meter (I'm thinking maybe 4-6 channels). I've got an idea on how I'm going to actually make the bit that splits up the music and gives signals to power LEDs to show these levels, but what can I use (presumable powered through a relay) to project a block of light onto a flat surface (each 'block' will be about approx 15cm x 30cm and each channel will be a line of these blocks stacked with the longer sides touching almost).
Ideally the projecting device will be as small as possible, I'm hoping to house them in a long narrow box somewhere on the wall. The lights don't need to be particularly bright, they'll be used predominately when the room is dark. Mounting the lights on the ceiling isn't really an option for me.
Thanks for any advice!